Process of and apparatus for producing ozone.



J. STEYNIS.

PROCESS 0F AND APPARATUS FOR PRODUCING OZONE. APP1xcAT1oN FILED JANIzs.m3.

` l l @@9411 Patented NOV. 30, 1915.

E STATE/s PATENT or JAN S'lEYNlS, OF BAY SHORE, NEW YORK. i

i PROCESS OF AND APPARATUS FOR PRODUCING OZONE.

h l $162,415 Specification of Letters Patent. Patented Nov, 3U, 19111Application ledJanuary 29,1913. Serial No. 744,905.

/b all whom it may concern lie it known that I, .lA-N S'rnYNis, a sub-vwill be reliable and easy to operate, and,

which when used in practising my improved process forming a part ofthisinvention will givey a higher comzentration and a greater etiiciencythan has heretofore been possible with the apparatus and 'process,heretofore used. y ln practising my 'present invention, the air to beoaonized is first dried and cooled, by being subjected in adrying/chamber to a cooling medium such as amm'onia gas Howing in aclosed circuit, in which closed cir-4 cuit there-is located a source ofrefrigeration or cold, such as an ammonia compressor and condenser. Theai i so treated is then conducted through suitable conduits into anozone generator where it is subjected alter# natcly and successively toelectrical discharges and to the coofling action of the same coolingmedium owing in the same circuit but more remote from the source ofcold. By thus conduct-ing the cooling medium, first through the dryingchamber and then through the ozone generator, 1 insure an even anduniform temperature in the generator slightly higher than in the drier,and thus insure against moisture being precipitated from the air'in thegenerator, which, should it take place, would seriouhly interfere withthe operation of the generator.

In the drawing accompanying and forming a part of this specification Ihave illustrated diagrammatically, apparatus embodying my improvements,and adapted to carry out my improved process.

Invthis drawing the numeral 1 designates an ammonia compressor which isconnected with and adapted 'to discharge into the cooling coil 2 of thecondenser 3. The compressor, cooling coil and condenser, may be of anysuitable construction. The condenser -pipe 23 by which it returnsplurality of hollow electrodes 27, 28 and 29,-

each containing an inner electrode 10 bearing discharge rings 11. Eachof the hollow electrodes is surrounded by a cooling jacket 12, and thesecooling jackets are connected in series with one another by the conduits13. The pipe r111 extends from the lower end of the cooling coil 6 tothe upper end 15 of the cooling jacket 12.

Numeral ltidesignates an air compressor of any approved type whichVdelivers air through the pipev 16a into the upper end of the drier 7,from which it is conducted by pipe 17 to the compartment 18 inclosingthe lower end of the hollow electrode 29. j Electrodes 28 and 29 attheir upper ends open into the compartment 19, and the electrodes 27-and 28 at their lower ends open into the compartment 20. The hollowelectrodes are thus connected in series with one another by thesecompartments. t

The arrangement of air pipes and conduits is such tha-tfthecomi'iressed1 air from the pump 16 passes through the conduit 16a,through the drier 7 and conduit 17 into the chamber 18, up' through thehollow electrode' densed to a liquid and descends into the condenser 3,from which it passes through the pipe 4, valve 5 and cooling coil 6 inthe drier, into the cooling jacket of the electrode 27 at the left-handside of the machine, then down through that cooling jacket and across bypassage 13 to the cooling jacket of the electrode 28, then up and acrossthrough the passage 13 to the jacket surrounding the hollow electrode 29at the right of the machine.- It then passes down this jacket and leavesthe generator through the to the compressor 1.

A pipe 24 formingqa'by-pass for the cool.-

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I back to the pump 1, in order that the drying chamber and the airtherein may be thorcoughly cooled and dried. The valve 25 is then closedand the valve 26 opened, so that the cooling medium after leaving thedrying chamber will l'low through the cooling jack.

ets of the ozone generator, and then back to the compressor. The airfrom the pump 6 in passing through the drying chamber 7 is cooled anddeprived of moisture held in sus pension, andv is then passed throughthe hollow electrodes in a direction reverse to that pursued by thecooling medium. in passing through these hollow electrodes it is sub`jected to the action of electrical discharges from the rings 11 on theelectrodes 10, and to the cooling action of the cooling medium in thejackets surrounding the electrodes. After being thus treated andsuitably ozon' ized it escapes from the apparatus through the conduit-22.

It will be observed that the cooling medium flows in a closed circuit,first passing through the drying chamber and then through the ozonegenerator, from which it returns to the compressor. By first causing thecooling medium to pass through the drier and then through the generator,I insure a temperature init-he generator slightly higher than that iiithe drier, which is important for the reasons above pointed out..

It is also important to maintain an even temperature throughout in theozone generator and I have found some difficulty in doing this, withmachines wherein the ammonia or cooling liqiiid was gasilied andexpanded in the ozonizer. In the machine described herein since thecooling liquid is gasified in a coil located in the drier and thegenerator is cooled by' the circulation of the cold dry gas, no liquidammonia enters the cooling jackets around the electrodes and there is notendency for it to collect in the jackets and cause an uneven cooling ofthe electrodes and of the air beiig treated. Should any liquid ammoniapass the coil 6 it will settle in the lower portion of the pipe 1li andwill not enter the cooling jackets.

While the generator used in practising this invention may be ot anyapproved construction, I prefer to use a generator of the, general kindabove described, characterized by the arrangement whereby the air inpassing through the generator is subjected to the cooling action of thecooling medium and to' electrical discharges successively. The generator shown is incased in a heat insulating case, and current forproducing the discharges is conveyed to the electrodes by conductors 30and 31.

Having now described my invention, what lI claim is:

1. In an apparatus of the kind described, the combination of an airdrier, an ozone generator, refrigerating mechanism comprising acompressor and condenser, and pipes tor conveying a cooling medium fromthe compressor and condenser, first through the drier and then throughthe generator, substantially as described.

2. In an apparatus of the kind described, the combination of an airdrier, an ozone generiitor, refrigerating mechanism comprising acompressor and condenser, and pipes for conveying a cooling medium fromthe compressor and condenser, first through the drier and then throughthe generator, and a by-pass for the cooling medium leading from thedrier directly to the compressor, substantially as described.

3. In `an apparatus of the kind described, an air drier, an ozonegenerator, means for liquefying a cooling medium, and means forconductin thc cooling medium, first through the drier and then throughthe generator, substantially as described.

4. In an apparatus of the kind described, the combination ol an airdrier, an ozone generator, and retrigerating mechanism comprising means.fir conveying a cooling' medium first through said drier and thenthrough said generator, said means being so arranged as to prevent thecooling medium 10i, when in a liquid state from reaching said generator.

5. The process of generating ozone which consists in first subjectingthe air to be ozonized to a cooling medium flowing in a closed Vcircuitto dry the air, and then in subjecting the air to the combined action ofelectrical discharges and the cooling action of the same cooling mediumafter the cooling medium has passed through the drier, substan-

